Patent · US Active

On-load tap changer, method for installing a load transfer switch insert in the on-load tap changer, and kerosene drain screw

US9640339B2 · kind B2 · utility

1Cited by

5References

16Claims

0Family size

Assignee

MASCHINENFABRIK REINHAUSEN GMBH · DE

Inventors

Klaus Hoepfl · Maxhütte-Haidhof, DE
Silke Wrede · Zeitlarn, DE
Hubert Zwirglmaier · Regensburg, DE

Key dates

Filing date	Jun 24, 2014
Grant date	May 2, 2017
Priority date	—
Expiry date	Jun 24, 2034

Classification

Technology area (CPC H)Electricity
CPC primaryH01H2009/005
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An on-load tap changer has a switching tube, an oil suction pipe arranged centrally and coaxially along an axis inside the switching tube, and a kerosene drain screw so mounted in a base of the on-load tap changer that it is coaxial with an axis of the oil suction pipe, with the axis of the switching tube, and with an axis of the on-load tap changer. A bearing ring is so acted on by a resilient element at one side and radially with respect to the axis of the on-load tap changer that the switching tube and the oil suction pipe both mechanically positively cooperate with the bearing ring and are centered about the axis of the on-load tap changer.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.